Xforce-pump



E. ERIOSON.

(MOdGL) FORGE PUMP.

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s Pmwumnpw. W-isllinglon. u. c

UNITED STATES PATENT OFFICE.

ERIC ERIGSON, OF BURLINGTON, IOWA.

FORCE-PUMP.

SPECIFICATION forming part of Letters Patent No. 249,603, dated November15, 188 1.

Application filed August 26, 1881. (Modeh) To an whom it may concern:

Be it known that I, EaIc ERIGSON, a citizen of the United States,residing at Burlington, county of Des Moines, Iowa, have invented a newand useful Double-Acting Force- Pump, of which the following is aspecificallOll.

Figure I is a vertical cross-section, showing the course of the water asthe piston is raised or lowered. Fig. II is a sectional view on line 1 1of Fig. I. Fig. III is a sectional view on line 2 2 of Fig. I.

Similar letters of reference indicate corresponding parts.

My invention consists of a centrally-located piston-chamber,A,with solidpiston P, and rod It extending through the cap 0. On the sides of thechamberA are the channels B and Grespectively. The channel 0 has theopening it into the chamber A. The channel B opens at it into thechamber A, and is shaped at its base to form the shoulder or seat S,against.

which the piston P strikes in the downward stroke and which preventsalso the possibility of the piston from coming into too close contactwith the valvef.

g, g, g, and g are valve-seats with valves f,f, f, and f respectively,at the points indicated in the drawings.

E is the detachable base-piece, hollow, and provided with threeperforations of peculiar form, x, 3 and 2, which is screwed to the lowerend of the pump.

L is the cap of the mouth or egress opening, hollow, and with the solidpartition l extending nearly across it from side to side. Theperforation t' leads into the chamber A. The perforation t" leads'intothe channel 0.

The operation of my invention, which can be worked by a-hand-l'ever orattached to a Windmill, is as follows: The piston being raised from theshoulder S, the water flows through the ingress-opening N into the basepiece E through h; thence through the valve f into the piston-chamberbeneath the piston, the valves f and f" being closed meantime bysucthrough the valvef' into the cap L, and out at the egress-opening ormouth M. Meantime suction has led water by way of the valve 1' into thechannel B, and thence through 71. into the piston-chamber abovethepiston. The operation of the piston is now reversed, and the waterabove it is forced through the valve f" into the cap L, and thence tothe egress-opening. Thus by double action a continuous flow of wateriskept up. Detachable cap and base pieces are used'in order to admit ofcleaning and removing obstructions without the necessity of removing thepump.

It is evident that the pump can be used it], partly in, or entirely outof, the water, according as pipes are used.

It is also evident that I do not wish to be confined to the exact formof construction here shown. Either valve can be removed at pleasg pumpnot broadly claim.

WhatI claim is-/ 1. In a double-acting pump, the chamber A, havingshoulder S, and ports h and t, and provided with piston P, combined withchan;

tion. The piston is now lowered, the valve nels B and G, and valve seatsg g g g, and

valves f f f f, all substantially as de-. scribed.

2. In a double-acting pump, the chamberA, having shoulder S, andprovided with piston P, and channels B and 0 opening thereinto at h andt, and valvesff ff, operating as described, all combined with the hollowbase E, perforated at g, g, and h,,and hollow cap L, having partition l,and the inlet N, and exit M, all substantially as described.

ERIC ERIGSON. Witnesses:

J. M. HOWARD, U. S. HAMMEGK.

